Hello to you all,<div>This is another question about requirements of disk space for a Open Nebula installation using NFS.</div><div><br></div><div>Steffen, Thanks for your reply!<br><br></div><div>What you wrote is what I could derive from the text.</div>
<div><br></div><div>However, I would like to know of why <span style="font-family:Tahoma">15*10GB=150GB on the frontend is required for running 15 virtual machines with NFS.</span></div>
<div><font face="Tahoma">The VM's will run on the worker nodes.</font></div><div><font face="Tahoma"><br></font></div><div><font face="Tahoma">I don't understand the technical reasons behind that there, according to this quote, needs to be one clone per running VM?: </font></div>
<div><font face="Tahoma">"<span style="font-family:Arial, Verdana, Geneva, Helvetica, sans-serif;line-height:18px">A 64 core cluster will typically run around 80VMs, each VM will require an average of 10GB of disk space. So you will need ~800GB for <code>/srv/cloud/one (..) </code></span></font><span style="font-family:Arial, Verdana, Geneva, Helvetica, sans-serif;line-height:18px"><code>/srv/cloud/one</code>, will hold the OpenNebula installation and the clones for the running VMs"" Can anyone explain?</span></div>
<div><span style="font-family:Arial, Verdana, Geneva, Helvetica, sans-serif;line-height:18px"><br></span></div><div><font face="Arial, Verdana, Geneva, Helvetica, sans-serif"><span style="line-height:18px">Is there any way to configure so that the VM's doesn't require any clone in srv/cloud/one, but only runs on the worker nodes?</span></font></div>
<div><font class="Apple-style-span" face="Arial, Verdana, Geneva, Helvetica, sans-serif"><span class="Apple-style-span" style="line-height: 18px;"><br></span></font></div><div><font face="Arial, Verdana, Geneva, Helvetica, sans-serif"><span style="line-height:18px">If that was possible then the below computer specifications (that I specified in my last e-mail) would be enough!</span></font></div>
<div><font face="Arial, Verdana, Geneva, Helvetica, sans-serif"><span style="line-height:18px">I hope to be able to run a system with up to 15 VM's and 2 Master images (in total) using NFS with 16 computers with 36 GB each.</span></font></div>
<div><font face="Arial, Verdana, Geneva, Helvetica, sans-serif"><span style="line-height:18px"><br></span></font></div><div><font face="Arial, Verdana, Geneva, Helvetica, sans-serif"><span style="line-height:18px">Thanks in advance!</span></font></div>
<div><font face="Arial, Verdana, Geneva, Helvetica, sans-serif"><span style="line-height:18px"><br></span></font></div><div><font face="Arial, Verdana, Geneva, Helvetica, sans-serif"><span style="line-height:18px"><span style="font-family:arial;line-height:normal">Kind Regards, Anders Branderud<br>
<br>[Personal blog] <a href="http://bloganders.blogspot.com/" target="_blank">bloganders.blogspot.com</a> : Logical reasons - based on scientific premises - for the existence of a Creator and that He hasn't left His sapient creatures without an Instruction Manual - Torah ['books of Moses'] - to ascertain, and aspire to, His purpose.<br>
<br>[Company] Anders Branderud IT Solutions - <a href="http://www.abitsolutions.org/" target="_blank">www.abitsolutions.org</a></span></span></font></div>
<div><font face="Arial, Verdana, Geneva, Helvetica, sans-serif"><span style="line-height:18px"><br></span></font></div><div><div class="gmail_quote">2011/5/13 Neumann, Steffen <span dir="ltr"><<a href="mailto:sneumann@ipb-halle.de" target="_blank">sneumann@ipb-halle.de</a>></span><br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
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<div style="direction:ltr;font-family:Tahoma;font-size:10pt">Hi,<br>
<br>
seems you have already done some reading, <br>
so here is only very brief comments which might <br>
help you understand things for second reading:<br>
<br>
If you don't have an NFS filesystem with (at least)<br>
15*10GB=150GB, you can't do the NFS installation.<br>
<br>
In your case, you want to copy the images to the local disks <br>
of the worker nodes, so you want "<a name="12ff3120624d68fc_12ff310d27eecdda_12fea793d725598a_non-shared_-_ssh">Non-Shared - SSH"</a> described on:<br>
<a href="http://opennebula.org/documentation:rel2.2:sm" target="_blank">http://opennebula.org/documentation:rel2.2:sm</a><br>
<br>
Yours,<br>
Steffen<br>
<br>
<div style="font-family:'Times New Roman';font-size:16px">
<hr>
<div style="direction:ltr"><font face="Tahoma" size="2"><b>From:</b> <a href="mailto:users-bounces@lists.opennebula.org" target="_blank">users-bounces@lists.opennebula.org</a> [<a href="mailto:users-bounces@lists.opennebula.org" target="_blank">users-bounces@lists.opennebula.org</a>] on behalf of Anders Branderud [<a href="mailto:anders.branderud@gmail.com" target="_blank">anders.branderud@gmail.com</a>]<br>
<b>Sent:</b> 13 May 2011 15:17<br>
<b>To:</b> <a href="mailto:users@lists.opennebula.org" target="_blank">users@lists.opennebula.org</a><br>
<b>Subject:</b> [one-users] Open Nebula, NFS and requirements of disk space?<br>
</font><br>
</div><div><div></div><div>
<div></div>
<div><span style="font-size:13px;line-height:18px">
<div style="font-weight:normal;margin-top:0.4em">
<span style="font-family:monospace">Hello!</span></div>
<div style="font-weight:normal;margin-top:0.4em">
<span style="font-family:Arial,Verdana,Geneva,Helvetica,sans-serif"><code>I have read this information about required disk space for installing Open Nebula:</code></span></div>
<div style="font-weight:normal;margin-top:0.4em">
<span style="font-family:Arial,Verdana,Geneva,Helvetica,sans-serif"><code><br>
"</code></span><span style="font-family:Arial, Verdana, Geneva, Helvetica, sans-serif"><strong>Example</strong>: A 64 core cluster will typically run around 80VMs, each VM will require
an average of 10GB of disk space. So you will need ~800GB for <code>/srv/cloud/one</code>, you will also want to store <span style="background-color:rgb(255, 255, 153)">10</span>-15 master images so ~200GB for <code>/srv/cloud/images</code>.
A 1TB <code>/srv/cloud</code> will be enough for this ex"</span></div>
<div style="font-weight:normal;margin-top:0.4em">
<span style="font-family:Arial,Verdana,Geneva,Helvetica,sans-serif"><code><br>
</code></span></div>
<div style="font-weight:normal;margin-top:0.4em">
<span style="font-family:Arial,Verdana,Geneva,Helvetica,sans-serif"><code>Here is my question: I have 16 computers and each of them has a harddrive of 36 GB each.</code></span></div>
<div style="font-weight:normal;margin-top:0.4em">
<span style="font-family:Arial,Verdana,Geneva,Helvetica,sans-serif"><code>Will the disk space suffice for this? [This is how I plan to configure the system:]</code></span></div>
<div style="font-weight:normal;margin-top:0.4em">
<span style="font-family:Arial,Verdana,Geneva,Helvetica,sans-serif"><code>There are only two master images (i.e. approx. 20 GB). </code></span></div>
<div style="font-weight:normal;margin-top:0.4em">
<span style="font-family:Arial,Verdana,Geneva,Helvetica,sans-serif"><code>There can be between 1 and 15 virtual machines. The virtual machines run on the worker nodes of Open Nebula.</code></span></div>
<div style="font-weight:normal;margin-top:0.4em">
<span style="font-family:Arial,Verdana,Geneva,Helvetica,sans-serif"><code>The master images are not cloned and they are not stored when the regular user is finished with his/her session.</code></span></div>
<div style="font-weight:normal;margin-top:0.4em">
<span style="font-family:Arial,Verdana,Geneva,Helvetica,sans-serif"><code><br>
</code></span></div>
<div style="font-weight:normal;margin-top:0.4em">
<font face="monospace">I understand that it won't work if this is necessary: "</font><span style="font-family:Arial,Verdana,Geneva,Helvetica,sans-serif"><code>/srv/cloud/one</code>, will hold the OpenNebula
installation and the clones for the running VMs".</span></div>
<div style="font-weight:normal;margin-top:0.4em">
<font face="Arial, Verdana, Geneva, Helvetica, sans-serif">How do I configure the system to not clone the running VM's, but to only to run them on the worker nodes?</font></div>
<div style="font-weight:normal;margin-top:0.4em">
<font face="Arial, Verdana, Geneva, Helvetica, sans-serif"><br>
</font></div>
<div style="font-weight:normal;margin-top:0.4em">
<font face="Arial, Verdana, Geneva, Helvetica, sans-serif">If the disk space suffices, then how do I configure the system to accomplish the above requirements?</font></div>
<div style="font-weight:normal;margin-top:0.4em">
<span style="font-family:Arial,Verdana,Geneva,Helvetica,sans-serif">I plan to install the system on CentOS, using the express installation (for NFS) provided on Open Nebula's website.</span></div>
<div style="font-weight:normal;margin-top:0.4em">
<span style="font-family:Arial,Verdana,Geneva,Helvetica,sans-serif"><br>
</span></div>
<div style="font-weight:normal;margin-top:0.4em">
<span style="font-family:Arial,Verdana,Geneva,Helvetica,sans-serif">Thanks!</span></div>
</span><br>
-- Kind Regards, Anders Branderud<br>
<br>
[Personal blog] <a href="http://bloganders.blogspot.com" target="_blank">bloganders.blogspot.com</a> : Logical reasons - based on scientific premises - for the existence of a Creator and that He hasn't left His sapient creatures without an Instruction Manual
- Torah ['books of Moses'] - to ascertain, and aspire to, His purpose.<br>
<br>
[Company] Anders Branderud IT Solutions - <a href="http://www.abitsolutions.org" target="_blank">
www.abitsolutions.org</a><br>
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